Intermolecular and Intramolecular Electron Transfer Processes from Excited Naphthalene Diimide Radical Anions

2014 ◽  
Vol 119 (24) ◽  
pp. 7275-7282 ◽  
Author(s):  
Mamoru Fujitsuka ◽  
Sung Sik Kim ◽  
Chao Lu ◽  
Sachiko Tojo ◽  
Tetsuro Majima
Keyword(s):  
Electron Transfer ◽  
Intramolecular Electron Transfer ◽  
Radical Anions ◽  
Transfer Processes ◽  
Naphthalene Diimide ◽  
Electron Transfer Processes

scholarly journals Catalytic control of electron-transfer processes

2003 ◽  
Vol 75 (5) ◽  
pp. 577-587 ◽  
Author(s):  
Shunichi Fukuzumi
Keyword(s):  
Electron Transfer ◽  
Metal Ions ◽  
Metal Ion ◽  
Photochemical Reactions ◽  
Transfer Reactions ◽  
Intramolecular Electron Transfer ◽  
Radical Anions ◽  
Electron Transfer Reactions ◽  
Transfer Processes ◽  
Electron Transfer Processes

Catalytic control of electron-transfer processes is described for a number of photoinduced and thermal electron-transfer reactions, including back electron transfer in the charge-separated state of artificial photosynthetic compounds. The intermolecular and intramolecular electron-transfer processes are accelerated by complexation of radical anions, produced in the electron transfer, with metal ions that act as Lewis acids. Quantitative measures to determine the Lewis acidity of a variety of metal ions are given in relation with the promoting effects of metal ions in the electron-transfer reactions. The mechanistic viability of metal ion catalysis in electron-transfer reactions is demonstrated by a variety of examples of both thermal and photochemical reactions that involve metal ion-promoted electron-transfer processes as the rate-determining steps, which are made possible to proceed by complexation of radical anions with metal ions.

A New Cyanofluorene-Triphenylamine Copolymer: Synthesis and Photoinduced Intramolecular Electron Transfer Processes

2009 ◽  
Vol 15 (41) ◽  
pp. 10818-10824 ◽  
Author(s):  
Ying Lin ◽  
Mohamed E. El-Khouly ◽  
Yu Chen ◽  
Mustafa Supur ◽  
Lingling Gu ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Intramolecular Electron Transfer ◽  
Transfer Processes ◽  
Electron Transfer Processes

Crystal-Structures of Three Long, Rigid, Norbornylogous Compounds of Relevance to Distance-Dependence Studies of Long-Range Intramolecular Electron-Transfer Processes

1987 ◽  
Vol 40 (12) ◽  
pp. 1951 ◽  
Author(s):  
DC Craig ◽  
MN Paddonrow
Keyword(s):  
Electron Transfer ◽  
Crystal Structures ◽  
Dipole Moments ◽  
Intramolecular Electron Transfer ◽  
Time Resolved ◽  
Transfer Processes ◽  
Distance Dependence ◽  
Molecular Backbone ◽  
Predicted Values ◽  
Electron Transfer Processes

Results of previous studies revealed that photoinduced intramolecular electron transfer between the dimethoxynaphthalene donor and dicyanomethylene acceptor groups in the series of rigid alicyclic compounds (2a)-(6a) is extremely rapid. As the first step towards determining the distance dependence of the rate of photoinduced intramolecular electron transfer in these molecules, crystal structures of (3a), (4b) and (5b), have been measured. The edge-to-edge distance between the two chromophores in (3a), (4b) and (5b) is 6.8, 9.4, and 11.5 � respectively. The estimated centre-to-centre separation between the chromophores in (2a)-(6a) ranges from c. 7.1 � in (2a) to c. 14.9 � in (6a). From these results, dipole moments of the charge-separated states of (2a)-(6a), following photoinduced intramolecular electron transfer, could be estimated. These predicted values were in excellent agreement with those determined experimentally by using the time-resolved microwave conductivity technique. An interesting structural feature of (3a), (4b) and (5b) is the pronounced curvature of the molecular backbone in these molecules. It is predicted that approximately 24 linearly fused norbornyl and bicyclo[2.2.0] units would complete a circle, forming a member of a novel class of macrocycles, tentatively called dogcollaranes.

[60]Fullerene–perchlorotriphenylmethide anion triads. Synthesis and study of photoinduced intramolecular electron-transfer processes

2006 ◽  
Vol 16 (1) ◽  
pp. 112-121 ◽  
Author(s):  
Stéphanie Chopin ◽  
Jack Cousseau ◽  
Eric Levillain ◽  
Concepció Rovira ◽  
Jaume Veciana ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Intramolecular Electron Transfer ◽  
Transfer Processes ◽  
Electron Transfer Processes

The electron that breaks the catalyst’s back – excited state dynamics in intermediates of molecular photocatalysts

2021 ◽  
Author(s):  
Carolin Müller ◽  
Ilse Friedländer ◽  
Benedikt Bagemihl ◽  
Sven Rau ◽  
Benjamin Dietzek
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Single Electron ◽  
Intramolecular Electron Transfer ◽  
Excited State Dynamics ◽  
Transfer Processes ◽  
Electron Reduction ◽  
Electron Transfer Processes ◽  
Franck Condon

In situ spectroelectrochemical studies focussing on the Franck-Condon region and sub-ns electron transfer processes in Ru(II)-tpphz-Pt(II) based photocatalysts reveal that single-electron reduction effectively hinders intramolecular electron transfer between the photoexcited...

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